Heel attaching machines



Mmm?, 1959 EN. LEE mp g 2,871,460

HEELv ATTACHING MAQ-[INES Filed Aprilvl2. 1957 3 Sheets-'Sheet 1 FePmanN Lee, leoc DoZor'es E. Lee, Eff-x. Leonard E, Proulx 3 Sheets-Sheet 2 F. N. LEE AL HEEL ATTACHINGMACHINES Deci OZ or-eSJPLeQ-'xrx Leonard EI Proa x may Inverzors FermcznNLe l) 00 .their-Az @2 March 17, 1959 Fild April 12, 1957 March 17, 1959 A F. N. LEE irl-AL 2,877,460

HEEL ATTACHING MACHINES.-

Filed April l2, 1957 5 Sheets-Sheet` 5 Inl/e n-fors' Fe T'man A/.Leegecd olores l?. l. ee,1Er7-x.' Leonard E.' prou/a: their/4 ttorely' nited States Patent Olice 2,877,460 Patented Mar. 1-7,y 1959 2,87 7,460 HEEL' ATTA'GHIN G MACHINES Application April 12,'y 1957, Serial No. 652,415 Claims, (Cl. 1=3z) This invention relates to machines for use in the attachment of heels to shoes and more specifically to improvements for positioning the shoes with relation to the heels in said machines.v v

In an application for United States Letters Patent Serial No. 655,937, filed April l1, 1957, in the names of Vernon H. Meyer et al., there is disclosed a jack for use in the positioning of shoes, which are mounted on geomctrcally graded lasts, in a well-known heel loading and attachingy machine of the general ty'pe disclosed in UnitedStates Letters Patent No. 1,157,688, granted October 26, 1915, on an application filed inthe name of Lester L. Glidden. The heel loading and attaching machine is calledv upon to attach heels to' shoes which are mounted on arithmetic'ally grade'd'lasts and geometrically graded lasts delivered respectively to the machine in short runs.

It is an object of the p're'sent invention to provide the above loadingv andI attaching machine withI means which is adapted quickly and effectively to' position in this machine shoes mounted onv either of the above types of lasts with a minimum amount ofv changeoverwtime loss. With the abovev objectin View the' illustrative machine is provided with a shoe supporting jack whichV will accommodate shoes mounted on arithmetically graded lasts and can be quickly modified to accommodate shoes which are' mounted on geometrically graded lasts having last positioning plates mounted thereon, said machine' alsol being provided with a pair of back gages which may be' selectively movedv into active positions for quickly and effectively locating the shoes on arithmetically and geometricallyv gradedI lasts respectively mounted 011v the jack lengthwise in the machine.

The present invention consists inl the' novel features hereinafter described, reference being had to the accompanying drawings which illustrate one embodiment of the invention selected for p'lirpcxs'es" of illustration, said invention being fully disclosedy in" the followingV description and claims.

In the drawings,

Fig. 1 is an angular" Viewl showing' a shoe', which isl mounted on a' geometricl last, i'n the process of having a heel attached to it' by theuse of thev illustrative machine which is of theI general' type'' disclosed in said- Patent No. 1,157,688 and m'ost ofrwhich lhas been broken away;l

Fig. 2 is a side View', partlyin section, showing dc'- tails of the jack and work positioning mechanism of'thc machine;

Fig. 3 is a view showing in plan the relation of right and left geometrically graded lasts and a heel positioning form at the time that shoes mounted on said lasts are positioned with relationtoy a heel in said form;

Fig. 4 is a view showing outlinesl along.- a heightwise median plane of theheelends of shoes of four dierent sizes positioned in thev machineready to be pressed against a heel (not, shown) inrsaid-.form;

Fig. 5 shows, partly sidev elevationk and partly insection, a shoe, which mounted on an arithmetically clenched against a heel 2, graded last, in the process of having a heel attached to it Iby the use of the illustrative machine; and

Fig. 6 isan angular view, partly in heig-htwisemedian section, of the heel end of a shoe", which ismonn'ted on a geometrically graded last and has had its heel attached by the use of the machine, material which has" been trimmed from' the peripheryv of the heel of the' shoe subar sequent to the heel attaching operation beingI shown in dash lines.

The illustrativek machinev is described with reference to attachingrubberhe'els 20 (Figs.y l, 2-v andv) and their base lifts 22, hereinafter referred to as composite heels4V 24, to the heel seats 26 of outsoles 28 of mensshoe's-S which are mounted on geometrically graded lasts 32 having'` secured to flat upper faces 34 of' their backcones 36 positioning plates" 38, each of which has dat sides 40 parallel to a center line LCL (Fig. 3) of the lastand comprises a dat or planar abutment surface 42'- into which extends a thimble 44.

The present machine is substantially'identical with the machine disclosed in said Patent 1,157,688 andv comprises a bracket 46 (Fig. l) which is secured by nuts 48 to upstanding. posts 50 forming part of a main frame 52 (Fig. 2) of thev machine. Mounted on the' bracket d6 is a carriage 54 whichl bears on al at upper surface 56 of the bracket 46' and has at its rear end bores (not shown) for receivingA a guide rod- 58 secured` to the bracket. The carriage 54 is moved against the action' of a spring (not shown) to the left, as viewed in Fig. l, away from its active or attaching position against astop collar 60, over the upper surface 56 of theY bracket 46 in response to movement of a? loader block (not shown) froml a nail receiving positionwhereby to clear an upper face 62v of a` nailing die 64 so that nails 66 (Fig. 6) then in passages (not shown) of the loader block maybe dumped from saidv block into passages 68 of a' selected nail design in the nailing die, said carriage 54 being moved to its heel attaching. position against the stop collarl by the spring as the loader blockv is moved -ba'clc to its nail receiving position; Mountedv for vertical movement in the passages 68l of the; nailing die 64' are drivers 70 (Fig. 5) adapted to drive nails, which have been dumped into saidl'passages, into the composite heel 24 and the heel seat of the shoe clamped by mechanism, hereinafterrdescribed, against saidheel, said nails being plate 72 of the last.

The carriage 54 has an undercut guideway 74' (Fig. 1)` for receiving a form or heel ring 76 which comprises a bottom plate 78 having passages- Sii arranged in predetermined design and, when the' carriage is in an active or attaching position, is arranged in substantial engage# ment with the upper surface 62 of the nailing die 64 with its passages in alinement with a pluralityl of the pas* sages 68 of a predetermined design of the nailing? die 64, an upper surface of the die being flush with the'upper surface 56 of the bracket 46. The form 76 has a cavity 82 adapted ttingly to receive the rubber heel 20 and tov locate in a predetermined position in the form, said rubber heel together with the base lift spotted to it, the po sition of the form in the guideway 74 of the carriage 54A being quickly established lby the engagement of'a'springpressed plunger 84 which is slidingly mounted in a' bore' (not shown) of the carriage and in a bore (not shown) in said form. The form 76' has secured toit by screws an upper plate 86 having -a cavity 88 for receiving and positioning the base lift 22 on the rubber heel 20 inthe event that the base lift has not been previously'secure'd or spotted to the rubber heel by'adhesives or by fastenings. Forms 76 4of different sizes and of the same styleV are so positioned in the carriage'Sdthatthe-eXtremeverticalrear end lines 90 of heel engaging portionsy thereof' are located along a xed vertical line. The forms 76 3 may be described as being p'ositioned'symmetrically in the machine with the vertical center lines of their rear ends arranged in a xed vertical heel reference line dlsposed at right angles to planes respectively of the rims of the attaching faces of the heels positioned in said forms.

The geometrically graded last having the shoe 30 mounted on it is manually presented right side up to a jack 92 (Figs. 1 and 2) swung forward to a predetermined loading -and unloading position shown in dash lines (Fig. 2), the jack Vthen being swung back to a vertical or attaching position shown in full lines (Figs. l and 2) with the rear end 94 (Figs. l and 4) of a break or feather line 96 of the counter portion of the shoe arranged above aud just forwardly of the rear end of an attaching face 9S of the base lift 22 of the composite heel 24 positioned in thev form 76. v The main frame 52 of the machine has a vertical guideway 100 (Fig. 2) along which is slidingly movable a plunger 102 having formed integral with ita multipart guide housing 104 which has an undercut guideway 106 for receiving a retaining slide 108 having formed integral with it a depending bifurcated boss 110 bored to` receive a bearing pin 112. The guide housing 104 and the retaining slide 108 have formed in them overlapping slots (not shown) for receiving a bolt 114 into which is threaded an internally and externally threaded sleeve 116 on which is mounted a handle 113 provided witha pin 120ftting selectively in one of a plurality of grooves formed in the sleeve. The handle 118 and accordingly the threaded sleeve 116 are turned to bind the retaining slide 108 to the guide housing 104, a nut 122 being provided to secure the threaded sleeve in a clampingposition. v

n The jack 92 comprises a post 124 having at its upper end a narrowed portion tting between bifurcations of the boss 110 and journaled on the bearing pin 112 said post having mounted on it a spring-pressed toggle plunger 126 having a V-shaped upper end which bears in a notch 128 formed in the bottom of said boss and serves to retain the post in its loading and unloading and its attaching positions.

The lower end of the jack post 124 is bifurcated to receive a T-shaped block 130 (Figs. 1, 2 and 5) the upper end of which has serratons adapted to be intertted with serrations of a retaining piece 132 xed to the post and which has arcuate faces adapted to be engaged respectively 4by arcuate lower. faces of the jack post. The block 130 is secured in different angularly adjusted positions on the jack post 124 by a screw 133 which passes through a bore in one bifurcation of the post and an arcuate slot 13S (Fig. 2) in the block and which is threaded into the other bifurcation of the post, the tightening of the screw serving to clamp the block effectively in its adjusted position to the post. Avbottom face of the block 130 is flat and has formed in it a transverse dovetail slot 134 which slidingly receives a dovetail projection of a guide housing 136, said guide housing being retained against any substantial amount of movement in said slot by a spring-pressed pin 138 (Fig. 2) which i'its slidingly ina bore of the block and in a recess 140 in the upper face of the housing. The pin 138 may be raised preparatory to moving the housing 136 from the block 130 by lifting a rod 142 secured to the pin along a slot 144 of the block. 1

The guide housing 136 has formed in it a T-shaped slot or guideway 146 in which slidingly ts an abutment slide or slide plate 148. The slide 148 has a slot 150 adapted to receive thelower portion of a stop pin 152 carried by the housing 136 and is constantly urged forwardly by a spring 154 opposite ends of which are attached to. the block 130 and to a rod 156 secured to the slide. When the jack 92 is idle a face which forms the rear end of the slot 150 is in engagement with the stop pin 152 (Fig. 2). The abutment slide 148 has secured to it a spindle 158 which projects beyond an abutment surface 160 of the slide and is adapted to receive the geometrically graded last 32 having a shoe mounted on it, the thimble 44 of said last being slid onto the spindle until the abutment surface 42 of the positioning plate 38 attached to the last engages the abutment surface 160 of the slide. As illustrated in Fig. 3, the central lines LCL of right and left lasts 32 respectively upon which shoes positioned in the machines are mounted, are inclined at equal angles alpha (Fig. 3) to a common vertical median plane 162 of the heel plates 72 of right and left lasts each of which heel plates has an outline dened by its U-shaped edge and is substantially similar to and centralized with respect to the Vfeather line 96 of the counter portion of the shoe mounted o n the last. It will be apparent that since shoes are shaped to the last, the vertical median plane v162 ofthe heel seat of the last is also the vertical median plane 'of the feather line 96 4of the overlasted counter portion of the shoe.

The rear portions of the heel plates 72 of geometrically graded lasts 32 of different sizes and accordingly the lrear portions of the feather lines 96 of the overlasted counter portions of shoes 30 of dierent' sizes formed on said lasts, are centered respectively about axes 164 of 'the thimbles 44 of the lasts. Accordingly, the shoe 30 mounted on the jack may be rotated about the spindle 158 to orient the vertical median plane 162 of the heel plate of-the last so that it lies in a vertical median plane 166 of the form 76 and accordingly the composite heel 24 positioned in saidform, Without shifting the rear end of the shoe lengthwise.

- In order that the operator may quickly and eifectively orient the shoe 30, mounted on a left or a right geometrically graded last 32 about the spindle 158 into a position in which the vertical median plane 162 of the heel plate 72 of the last shall be coincident with the vertical median plane 166 of the heel form 76 and vaccordingly of the composite heel 24 positioned in said form as he places .the last on the spindle 158, the abutment slide 148 has at its opposite sides vertical slots 168 in which t respectively a pair of vdepending stop lugs 170 which are secured by screws 172 to the slide and are engaged respectively by one of the planar side faces 40 of the positioning plate 38 on the last in accordance with whether right or left Work is being operated upon.

When the machine is operating upon shoes 30a-(Fig. 5) mounted on arithmetrically graded lasts 32a which do not have positioning plates mounted on their back cones, a conventional back gage 174 is used to position the shoes lengthwise in the machine. In order to position shoes 30 mounted on geometrically graded lasts 32 lengthwise in the illustrative machine .there is provided a back gage 173 which has a at face 175 adapted to be engaged by themedian portion of the back 4seam line 177 of the shoe and which has secured to it a pin 179 journaled on a bearing flange 181 secured to a shank portion of the conventional back gage 174. The back gage 174 comprises a laterally concave surface 176 which is adapted to be engaged by the rear end of the rand crease 178 of the shoe 30a as the shoe on the abutment slide 148 is moved rearward, against the action of the spring 154,

upon the jack 92 which has already been moved to its attaching position determined by the engagement of an upper face 180 of the jack with the bottom of the retaining slide 108. The heightwise elements of the concave surface 176 of the back'gage 174 may be described as extending toeward of the shoe as they extend toward said rand crease.

The back gage 174 in its lowered gaging position shown in Fig. 5 lies in the path of movement of a loader block (not shown) as it delivers the nails 66 to the passages 68 of the nailing die 64 and accordingly this gage is raised by suitable mechanism, hereinafter described, in response to movement of the jack 92to its loading and unloading position and is lowered toits operating position as the jack is swung to its attaching position, the loader block being operated while the 4jackie in itsteadngand im. loading positions: An upstanding or shank portion of the conventional back gage 174 is provided with guideways 182A for receiving guides 184 of'a back gage holder 186 which may be initially moved in directions 188, 190 or lengthwise and widthwise, respectively, of the machine by mechanism such as disclosed in United States Letters Patent No. 1,030,680 granted June 25, 1912, on an application tiled in the name of Joseph H. P'ope.- Secured by a screw 192 to the upper end of the shank portion of the conventional4 back gage 174 is a chain 194 which meshes with teeth of a sprocket 196 rotatably mounted on the retaining slide 108 and has its upper end attachedto a hooked lever 198 which is journaled on the bearing pin 112`and has a face 200 thereof held by the weight of the back gage and its associated parts against an adjusting screw 202 threaded into the jack' post: 124. The' shank portion of. the back gage 174 may' be referred to as a carrier slide.

Preparatory to attaching composite heels'24a to shoes 30a (Fig. 5) mounted on arithmetically graded lasts 32a which usually do not have positioning plates mounted on them, the depending stop studs 170 are removedl from the abutment slide 148, theL block 130 being initially se cured in a desired angular positionv on-the jack post' 124 in accordance with the angle of a top face 34u ofthe back cone of the arithmetically gradedV last 32a'. Moreover, prior to operating upon regular work the'v back gage 173I is swung from its active position against the' conventional back gage 174, asshown in Figs. l and` 2, to its inactivel or raised position shown in Fig. 5.

Whenoperating uponl regular work the shoesI 30a, mounted onk the arithmeticallyy .graded last 32a, are presented right side up to thev jack 92, a thimble 44a. of the last overriding the spindle 158 of the abutmentslide 148 of the jack until the top face 34a of the back cone of the last 32o engages the abutmenty face 160 of the slide. The jack 92 is then swung rearwardly about an axis of the bearing pin 112 until the upper face 180'v of the jack engages the retaining slide 108, thev operator during. this time manually orienting by eye the shoe on the spindle in order to aline the median vertical: plane 1620i theheel plate 160 and accordingly the feather line 96 of the counter portion of the shoe with the vertical' medianV plane 166 of the composite heel- 24a positioned in. the formV 76, the abutment slide 148 thenv being moved: rearwardly along the T-shaped slot 146 of theV guide housing 136 against the action of the spring 154v until? the'rear end of the rand crease 178 of the shoe engages. thef lower end of the back gage 174. The screw 202 isnitially ad'- justed` to insure that the back gage 174 shallbe, moved into an operating positiony in whichY its lower endreceives the rear end of the rand creasev of theA shoe after the jack 92 has been swung rearward toits andthe shoe onthe abutment slide 148 has beenilnoved` rearward on the jack against the back gage.

When the shoe 30a has lbeen positioned with relation to the composite heel 24ay in the form 76 aV clutchy (not shown) of the machine is tripped causing the jack 92 tor be lowered to press the heel seat 26 of the outsole 28` of the shoe against the attaching face 98 yof the heel and thencausing the nail drivers 70 to drive the nails 66 into the heel and the heel seat of the shoe, said nails being'A clenched against the heel plate 72 of the last.

It will be noted, as illustrated in Fig. 4,- that-whenishoes- 30 of different sizes built. on geometrically gradedl lasts 32 are positioned in the machine with the iiat: abutment surfaces 42 of the positioning plates 38 of the lasts 36 in engagement with theA abutment surface 160 of the slide 148, said last being oriented on the spindle 1-58'by the engagement of one or the other of the. ilat `sides 40 of the positioning plate with one-orv the other of the depending stop lugs. 170. secured tothe slidey 148, and the rear endsy 94 of thel feather. lines 96.of'the'shoe'sv being, vertically 4 ar-ranged above one; another, the medians por-1 attaching positionr fir sizes of shoes.

tends upwardly of said shoe.

nous' of the back seam` lines 177 of the sneesj extend neng one another in substantially tangential'relation. Accordingly, it will be appreciated that the' hat face 175 of the back gage 173, which face extends" toewardly as it extends upwardly of the shoe; may' be effectively engaged by the medianportion of the'l back seam lines 177 of the shoes tol position they shoes lengthwise in the machine and vertically above t'he composite heels l 24 positioned in the for'r'ns 76 without initial height'wise adjustment of said gage being necessary.

The' face 175 ofthe illustrative back gagev 173 is dis- ,posedv at substantially 7 to a vertical plane extending widthwise` Vof the shoe and passing' through said gage, this angle being suitable to accommodate most styles and vIt will be'A understood thatv the face 175 of the back gagel ,173 need'not'l be iiatbut may be concaved laterally slightly, the' transverse radius of curvature'of the face" of this gage' being, greater than the transl verse radius of curvature of the opposingrear en'd portionl of the lshoepositioned inv the machine; said concave surface being'generated bya line which moves transversely of' the shoe'and extends toewardly of the shoe as it ex- The back gage 173 is s0 constructed andl arranged that its" face 175 is arranged' as above'descrihed when its lower endis in engagement withy the surface 176 of the back gage 174". It will be appreciatedv that various other devices, for example, a screw (not shown) which is adjust'abl-yrnounted in the shankv portion of the back gage 174; 'may bel provided for controlling the active' position of the back gage' 173.

In'l'vi'ew' of the foregoing' it will be clear that when shoes-A mounted on the arithmetically graded lasts 32a are being operated upon itis'nece'ss'ary initially to adjust the back gage' '174' into predetermined and diiferent heighwise positions everyl time a shoe of af different size isl -operated upon whereby toinsure that the gage\174"shall be engaged by the rear end of the ra'nd crease 1781i of the shoe. -Thefore'g'oing adjustment consumes considerable' time and often the operator fails to make the proper adjustment with the result that the heel is not properly positioned on the shoe. Itl willalso; be clear that when geometric work only is being operated upon in the illustrative machine it is not necessary initially to adjust the screw 202 as above described'to accommodate shoes of differentsizes, it having been found that `one adjustment ofl the'back gage 173 is suicient to accommodate most' stylesand siz'e's of shoes. For operating exclusively on geometric work the hack gage 173 maybe fixed to the mainframe of the machine or to a bracket which forms part of the main frame since that gage in its operating position is located so high above the heel positioning form- 76 that it is not engaged by the loader block during the transfer of nails to the nailing die 64.

Preparatory to attaching' the composite l heels 2`4`to the shoes 30"'vvhich` are mouht'ed'- ony geometrically graded lasts 32, the st'op lugs 170 are secured by screws 172 to the sides of the abutment' slide 148l and the geometric back gage -173 is' swung from itsra'isedr` inactive position shown in Fig. 5 to' its active position* against the front face 176 ofthe conventional back gage 174 as shown in Figs; 1 andy 2', the flat work' engaging face 175 of the gage 173 extending transversely ofv the'shoe and extending toewardlyof the shoeas itv extends upwardly of the' shoe;

In operating upon the shoe 'mounted-uponv the geometrically graded last 32' the operator presentsl the last to thejack 92, the thimb'le 44 of said lasty being received by thefspindle 158 of the abutment slide 148 until the hat upper surface 42 of the positioning'. plate 38' of the last engages the abutmentk surface of the' slide, the opera'- tor swinging.` the shoe and accordingly the laston the spindle untiLonef'or the otherof said tiat sides 40 of the positioning:v plate engagesl one`` of the stop lugs 170 (depending` uponz whether a` right or left shoe i's being operatedupon'f). to position-J the'l vertical median plane` 162- of'v the heel plate 160` oflthe lastk and accordingly' thel heel* aer'aseo seat of the shoe on the last in coincident relation with the vertical median plane 166 of the form 76 and the composite heel 24 positioned in said for-m. The jack 92 during this time may be swungrearwardly until its face 180 engages the bottom of the retaining slide 108, the work then being moved rearwardly on the jack post together with' the abutment slide until the median portion of the back seam line 177 of the shoe engages ,the face 175 of the back gage 173 thereby correctly positioning the shoe lengthwise in the machine. The clutch (not shown) of the machine is then tripped with the result that the plunger 102 is lowered by power causing the heel seat 26 of the outsole 28 of the shoe 30 to be forced against the attaching' face 98 of the composite heel 24, the nails 66 thereafter being driven into the heel and' the heel seat of the' shoe to attach the heel to the shoe. The planarface 175 of the back gage 173 may be described as being disposed at right angles to a vertical median plane of the heel positioned in the form and as forming with a plane of the rim of the attaching face of the heel a dihedral angle of about 83 which includes the heel end of the shoe'. The planar face 175 may also be dened as extending forwardly of the shoe 30 as it extends upwardly of said ,shoeI and as being disposed at a slight angle to a vertical plane extending transversely of the T-shaped slot or guideway 146.

The face 175 of the back gage 174 may be described as being adapted to position shoes of `different sizes lengthwise in the machine with the rear ends 94 ot their feather lines 96 arranged in a vertical shoe reference line substantially parallel to or substantially coinciding with a heel reference line of the extreme vertical rear end line 90 of the cavity 82. y

Having thus described our invention, what we claim as new and desire to secure by Letters Patent of the United States is:

` 1. In a heel attaching machine employing forms for supporting and positioning heels of different sizes, means for symmetrically positioning any one of said forms selectively widthwise in the machinewith a vertical central line of its heel engaging portion arranged in a fixed vertical heel reference line, a jack `for supporting a shoe on a geometrically graded last, said jack being movable between a loading and unloading station and an attaching station, vertically with relation to said form vin response to movement of the jack and has a xed vertical operating position with relation to the jack at said attaching station and which has a face engaged by the median portion only of the back seam line of the shoe on the jack moved to the attaching station for ,positioning shoes of different sizes lengthwise in the machine with the rear ends of their feather lines arranged` in a shoe reference line substantially coincidentwith said heel reference line, said face of the back gage being formed -by the generation of a line which extends generally heightwise of the shoe and isl moved parallel to itself transversely of the shoe and which diverges at a slight angle from said heel reference line as it approaches the heel supporting and positioning form in the machine;

2. In a heel attaching machine, a form for supporting aheel having an attaching face a rim of which lies substantially in a horizontal plane, a jack comprising a post and a plate slidably mounted onthe post and adapted to receive a geometrically graded last upon which is mounted a shoe to which the heel is to be attached, means movablewith the plate for orienting the shoe upon the plate whereby to aline a vertical median plane of the heel end of theshoe with a vertical median plane of the rim of the heel, a power operated plunger, said jack being mounted for pivotal movement on the plunger between a loading and unloading position and a heel attaching position, and a back gage which is vertically movable to a 'xed operating position in response to movement of the jack to its heel attaching and a back'gage which is movable` position and which has 'a face adapted to be engaged -by the median portion only of the back seam line of the shoe whereby to position the oriented shoe lengthwise on the jack irrespective of its size, said face at and adjacent to its portion of contact with the back seam line of the shoe being formed by vertical elements forming an acute angle with the plane of the rim of the attaching face of the heel in the form.

3. In a heel attaching machine, a nailing die, a form for positioning a heel with relation to said die with. a rim of the attaching face of the heel arranged substantially in a plane, a jack for supporting shoes mounted or arithmetically and geometrically graded lasts heightwise and widthwise with relation to the form, a rst back gage engaged by the rear end of the rand crease of one of the shoes mounted on one of the arithmetically graded lasts on the support whereby to position the shoe lengthwise with relation to the form, and a second back gage which is movable between active and inactive positions on said rst back gage and when in its active position is engaged by the median portion onlyof the back seam line of one of the shoes mounted on one of said geometrically graded lasts on the support whereby to position the shoe lengthwise with relation to said form, said second back gage having a planar face which is disposed at right angles to the vertical median plane of the heel in said form and which lies in a plane, forming with a plane of the rim of the attaching face of the heel in said form, a dihedral angle which is approximately 83 and includes the rear end of the shoe.

. 4. In a heel attaching machine, a nailing die,a form for supporting and positioning a heel with relation to said die, a back gage, a jack cooperative with said back gage in the positioning of a shoe mounted on a geometrically graded last having a back cone provided with a positioning. plate which has an abutment surface andv a thimble extending into said surface and opopsite sides of which are symmetrically arranged with relation to a center line of the last, said jack comprising a post which is mounted for pivotal movement between a loading and unloading position and an attaching position and which has a rectilinear guideway, an abutment slide which is slidingly mounted in the guideway, said abutment slide having an abutment surface, a spindle projecting beyond said surface, and a pair of laterally spaced orienting studs, said spindle being adapted ttingly to receive the thimble and to allow the abutment surface of the positioning plate of the .last to engage the abutment surface of the abutment slide and one of -said studs being engaged by one of the sides of said positioning plate of the last in accordance with whether a right or left shoe is being operated upon, whereby to position the vertical median plane of the heel seat of the shoe in a vertical median plane of the heel in sa'd form, and a back gage having a substantially planar'face which is engaged by the median portion only of the back 4seam'line of the shoe and which extends upwardly and forwardly of the sho'e at a slight angle to a plane disposed transversely of and at right angles to said guideway,

5. In a machine for attaching heels to shoes mounted on arithmetically and geometrically graded lasts having planar back cone top faces respectively, into which thimbles extend, and back cone side faces, -a nailing die, a form for supporting and positioning a heel with relation to said die, a jack post movable between a loading and unloading and an attaching position, a carrier slide movable in response to movement of the jack post, a slide plate which is movable on said post in a rectilinear path toward and away from the carrier slide and has an. abutment face and which has mountedI on it a spindle and studs projecting beyond said abutment face, said spindle being adapted successively to receive thimbles of arithmetically and geometrically graded lasts until the back cone'top'ffrfaces of said lasts engage said abutment face of said slide plate and one of said studs being adapted to be engaged respectively, in accordance with whether a right or left shoe is being operated upon, yby one of the back cone side faces of geometrically graded lasts to orient the heel ends of shoes on the spindle with their vertical median planes lying in a vertical median plane of the heel in the heel form, means mounting said studs for removal from the side plate to enable shoes on arithmetically graded lasts to be oriented manually to their proper positions on the spindle by the operator, a tirst back gage which is mounted on the carrier slide and is adapted to be engaged by the rear ends of the rand `creases of shoes which are mounted on said arithmetically graded lasts and are oriented on the slide plate whereby to position the shoes lengthwise, and a second back gage which is pivotally mounted between active and inactive positions on the carrier slide and has a planar face adapted to be engaged by the median portions only References Cited in the le of this patent UNITED STATES PATENTS 1,157,688 Glidden Oct. 26, 1915 1,399,784 Mayo Dec. 13, 1921 1,920,281 Standish Aug. 1, 1933 1,947,744 Standish Feb. 20, 1934 2,111,512 Naceski Mar. 15, 1938 

